config path에 http 프로토콜 지원

reflect_config.go

@@ -1,8 +1,15 @@
 package gocommon
 
 import (
+	"crypto/md5"
+	"encoding/hex"
 	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
 	"os"
+	"strings"
 	"time"
 
 	"repositories.action2quare.com/ayo/gocommon/flagx"
@@ -58,14 +65,57 @@ func MonitorConfig[T any](onChanged func(newconf *T)) error {
 	return nil
 }
 
-func LoadConfig[T any](outptr *T) error {
-	configfilepath := configFilePath()
-	content, err := os.ReadFile(configfilepath)
-	if os.IsNotExist(err) {
-		return os.WriteFile(configfilepath, []byte("{}"), 0666)
+var configContents []byte
+
+func splitURL(inputURL string) (string, string, error) {
+	parsedURL, err := url.Parse(inputURL)
+	if err != nil {
+		return "", "", err
 	}
 
-	return json.Unmarshal([]byte(os.ExpandEnv(string(content))), outptr)
+	base := fmt.Sprintf("%s://%s", parsedURL.Scheme, parsedURL.Host)
+	path := parsedURL.Path
+
+	return base, path, nil
+}
+
+func LoadConfig[T any](outptr *T) error {
+	configfilepath := configFilePath()
+	if len(configContents) == 0 {
+		if strings.HasPrefix(configfilepath, "http") {
+			// 여기서 다운받음
+			_, subpath, err := splitURL(configfilepath)
+			if err != nil {
+				return err
+			}
+
+			h := md5.New()
+			h.Write([]byte(subpath))
+			at := hex.EncodeToString(h.Sum(nil))
+
+			req, _ := http.NewRequest("GET", configfilepath, nil)
+			req.Header.Add("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36 Edg/111.0.1661.51")
+			req.Header.Add("As-X-UrlHash", at)
+			resp, err := http.DefaultClient.Do(req)
+			if err != nil {
+				return err
+			}
+			defer resp.Body.Close()
+			configContents, err = io.ReadAll(resp.Body)
+			if err != nil {
+				return err
+			}
+		} else {
+			content, _ := os.ReadFile(configfilepath)
+			if len(content) == 0 {
+				content = []byte("{}")
+			}
+
+			configContents = content
+		}
+	}
+
+	return json.Unmarshal([]byte(os.ExpandEnv(string(configContents))), outptr)
 }
 
 type StorageAddr struct {